Leather-working machine



L. 0. RAMSDELL.

LEATHER WORKING MACHINE- APPLICATION FILED JULY 22. 192

Patented my 10,1921.

SHEETSSHEET I.

' L. 0. RAMSDELL- I LEATHER WORKING MACHINE.

APPLICATldN FILED JU LY 22, I920- 1 ,377,434;, Patanfued May 10, 1921.-

2 SHEETS SHEET 2- INVENTOR. @WMQMM/ is are commonly employed for workin'gjhides, skins and leather, "in whic'h an operating- TLQQrroNbrmamE; y p p a E EEW N Q NE. 3 1:

R PUNITED I ztrivnoivo.v BAMSDELL, or n NvERs, mssacnbsnms; Assreivon Fro "run nnit' T N H N EEABODi MAssacnusE'rrsyn CORPORA- To allt'wliom it may 50mm! J "Beitknownthat I, L N RAMSDELL,

:of which the following description, in; min

nection with the accompanying" drawings,

is a specification, like" characters on the drawings representingilike parts; c wThis invention relates "tomachines ofthat class'in which a rotatable diskorcam-provided with an inclinedface cooperates with alever to effectmovementof the latter in one direction, Machines of this character tool is'caused tobereciproeatedwhile it is 1 being rotated, the movement of the toolji'n jefl ect d the: face calm acting on saidl'e've'r} a l In leather working machines' of thisc'har actor as heretofore constructed 'and known tome, the "lever carriedfa ball which contacted with-the face; cam-L This arrangement created an excessive friction and in time were a groove, inthe' face of the cam, which produced anuneven and jumpy stroke ofthe operating tool inits reciprocating motion, with the result that the efliciency' of the machine was greatly impaired and the ,costof operating the same increased."

' The present invention' has forlitsl object i 7 to increase the'eificiency prolong the life of machines of the character described; and also to enablethemyto be operated with a minimum of power," and obtain a superior product-from the machine. t

To this end, the ace tam has" cooperating with it: an antifriction device, which is mounted to rotate'in one direction and to oscillate in a direction substantially atright angles to the first mentioned direction, and

said 'antifriction device is preferably made asa disk orwheel provided with a beveled circumferencewhich is of the same inclination as the beveled or inclined face of the cam. 1 n a The beveled wheel or diskis'mounted on a substantially vertical pivot,jwhich is preff erably mounted in a carrier or framehori-- zontally pivoted in the leverwhich actuates the operating tool, the pivot forsaid car rier or frame being located atone side of v 1; @Fig. 5; a front elevati Xtow'ard the left; a p

Referring to the drawing, a represents an vantages above noted. a In accordance with the present invention, the beveled'face 16 ofrthe cam ,1 5ihas co- "and said cam.- a i v Theseand otherifeaturesof this invention 1 7 i will be po nted out in the claims at 'theend .of tbisspcificatiori; I i NF gure'l is an elevation 'ofa suflicient'pon v ltion ofs-adinachin'e embodyingthis invention to enable it to be understood.- I52 .FF 1g. 2, a: side;elevation 'ofithe macl iine shown in Fig. lrlooking-toward the left.

4, van :enlarged' detail .ofthe cam I the eleverloperated by it, and

I fF-ig. rel ti 1 operatingtool,:whichismounted onashaft whitening. and bufling -machines, .rbe ing usudoes not, form." part thereof. i a I The tool a a is .reciprocated gon its shaft 1) g b to rotate therewith and to be" reciprocated '51 5? fthereon; The shaft 5 ismounted in a suitxablefframefa and ma be provided with 'pulleys-d 'for' rotating-it.- fi 1 f Thejaoperating tooll alis shown as a cylin- .der and may be such"as commonly used-fin by nve m, whichlmoves it in. one ;'direc-.

tion, and by a vspring 12which moves it in i the oppositedirection" l r The lever 10 is'pivoted at 13 to a support 14, representdfinFigii2 by dotted lineskas' a bracket which: is. attached to "the rf rameaiof the: machine, landzsaidzlevler is tlll'nediOll its pivotinone direction byiaicam 5 disk 15' provided with an inclined or beveled v i face 16, and mounted on a countershaft 17 provided with a pulley 18 for-[rotating it.

' The machine as thus far described isnot herein cla1med,as it'is old in the art of hide f and leather working machinery, but insuch old machines, the lever 10 usually carried a ball wh ch engaged theinclinedface' 16 of the cam disk '15, with the operatingv with it can antifriction device which is capable of movement-in two dire ctions at an angle to each other.

attending disadmade as herein shown and consists, of a disk f cunziference 21, whichisofthe same inelination -as the 'bw eled face 16" of the" cam which it bears against. The disk= .2 01 mounted to turn freely ona vertial pivot for the bevel disk 20, and is located between the'pivotv22; anda the cam disk 15,;as 'clearly By reference. to Fig. .4,Lit

i I as;ther:camidisk;:151is revolved; the inclined relatiojn. to t' during each rotation of the latter, while :at thersamectilne said-- disk isv tree; .to turn 'or V irotate: on jitsrpivott22 in (a, direetionsubgstantiallyrati; right angles torthat': :inrzwhich it ais tilted byiithe cam diski; *As a' resultof ithisjiconstruotion, the'afriction :between-Athe mm disk ;;15 and thezidiskTQO is redliced'gto orgbevelediface:16jthereof is' relieved from belng cut or ig'roovedlby .thebeve1"fcircumlience 2lfofi'the di'sk, inasmuch as the disk is free; totiltrorsiturn on the pivot '26" ofjthe carrier orqframei 23,: to follow :the: bevel j 'fac'e 7 16 of thes; ca m :and'LtherebyI'keep. the bevel 2 5 circumference@221 of the i'disk-in the sarn'e a iminimumgandithezlife r-ofgit'hev machine is ma'terially;=prolonged 7 Also less; powenis I required to, ruli'therniacli ine, alighter'spring "1 112, can :be' usedr to keepzthe =disk;21lin {con- .1 ct lftllzifih r 05111915, and q a v:s l erionz'grade nientg The invention, .1

I f work-isproduced, on fth'e machine-because 4 0 7 V 'nients of the operating 13001,; especia ll'y when rotatd at" a ire'latively high speed',l -as ion intool the ,prl'esentf instancel having .'a,pe

even and. smoothzreciprocating move-v fectly i :hereini. shown bodied-in a' machineinlwhicli-the red-prem ling-operating jtool is gal ,plain oiylinder, but

7 I g shown; a

. provided with abeveled'or inclined cir- I 1 herein f lllln aflinachine ofthejhharacter desoribed, in combination, a reciprocating tool,; a5 lever forv inov-ingvit V in one idireoti'omf'a{spring to i mounted to. turn.- in another; direction. atan angle to the 'firstrmentioned' direction.

"move'it'iii' the opposite direction, a rotatable V earn cooperating with said leveriand having 7 an inoliii'd face, a rotatable disk provided g Y a'machineof the character described,

in-. combi nation, a" reciprocating tool,a lever .I

for moving ;it 'in. one direction,'s a?" spring to moveitinetheopposite .direetiomla rotatable I carn cooperating withisaidzleverx andihavfilig I an; inclined face, a;-rotatable% jdisk rovided with .Qa"; beveled circumference L .ioooperatin g :c'ar ri'er i for; said 1 disk :pivotally...- connected 1, inclined; face "16' of 'the'icam withnsaid; lever: to 7,: :p'ermit',v said "disk; .to E be =2 .1.

tilted 'byisaidmam in. a direction at an: angle a 'riioithatsin .wvhiohiit i turns: on said carrier; v

:for moving it;in .;jone'i;direction;a lever; torn."

moving it in the opposite dire'ction, arota- {table .di s k zhaiviligsan linclined-rfac, an antiv l frictioni devicelcooperating with the inclined --face ,o'ff'saiol' diskzand? mounted on :said lever -to{.-rotate; in loner-directionand j to ,be' iltilted 1; J;

rturned niai" direiotionzat an "ang t t ,iILwhichjitflisrotatedQ -x"'"- 4 A. In-a machineofthe charactendescribedi in ,oo1nbination, a; Erotatable 2 disk it provided saiddisk; and} a device inwhiohflsaid anti- {friction fijdevice' isjlmountejdto rotate in one direction and toiloe turn B d?lIlgfifzidliQCtlOIl at a angl to th t injwhich it is rota ed-.1:

: Ina. testimony whereof}: I'i have} signedlimy nameto this -specification; -f

"it isz notgd'snjed i to! lin n the invention; to '7 T f 

